Cita APA (7th ed.)
Galilei, G., Reeves, E. A., Van Helden, A., & Scheiner, C. (2010). On sunspots. University of Chicago Press.
Cita Chicago (17th ed.)
Galilei, Galileo, Eileen Adair Reeves, Albert Van Helden, i Christoph Scheiner. On Sunspots. Chicago: University of Chicago Press, 2010.
Cita MLA (9th ed.)
Galilei, Galileo, et al. On Sunspots. University of Chicago Press, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.